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DC Power Jack Mod

  • 15-08-2012 2:50pm
    #1
    digitaldr
    Registered Users, Registered Users 2 Posts: 2,522 ✭✭✭


    The DC jack on my aging HP Probook 6545b is broken - internally not the connection with the motherboard. I have taken it apart (HP thankfully have freely available service manuals) and was going to replace it myself. After a bit of googling I figured my desoldering/soldering skills wouldn't be up to it so I got a few quotes - best one was €25 (supplying the part myself) which didn't seem too bad. One guy told me they no longer did jack replacements as, no matter how skilled the tech, they invariable fail again pretty quickly.

    So I've decided to try this mod. It basically soldering wires to the motherboard and siting a new DC Jack in the modem port (I've never used it) securing it with hot glue.

    I have a couple of questions though:

    Would 20 AWG (from an old ATX PSU) be OK - laptop PSU is is 19V 4.7amps (90 watts)

    The modem port is on the other side of the laptop to the existing DC jack so I'll need about 10 inches of wire. Will this cause RF interference? There's no room for a ferrite bead and not sure if I could get a screening sleeve.

    Any help/suggestions greatly appreciated.


Comments

  • #2
    ED E
    Registered Users, Registered Users 2 Posts: 36,170 ✭✭✭✭ED E


    Sounds like an over complicated solution. Jack replacements sometimes fail, but more often than not do not. Soldering them is still a b1tch, but its what you should be going for.


  • #3
    HelpWithIT
    Registered Users, Registered Users 2 Posts: 276 ✭✭HelpWithIT


    Never ceases to amaze me....you seem to have all the answers and knoowledge already but didn't want professional to do it!! So why post on here when you seem to know all the answers??


  • #4
    HelpWithIT
    Registered Users, Registered Users 2 Posts: 276 ✭✭HelpWithIT


    The reason for oxidization is bad soldering...simple or no knowledge of proper soldering..I'm just quoting the reference to instructables site you quoted


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